Catheter



(No Model.)

' R. N. MAYFIELD.

CATHETER.

No. 896,754. Patented Jan. 29, 1889.

IIVVE/VTOR I ATTORNEY WITNESSES.

niiTEs PATENT Orricn.

RE ULEN N. MA'YFIELD, Oi BOULDER, COLORADO.

CATHETER.

SPECIFICATION forming part of Letters Patent No. 396,754, dated January29, 1889.

Application filed October 5, 1888- Serial No. 287,300- .No model.)

once being bad therein to the aeeompanying drawings. I r

My invention rolatesr to an ijliliJi'OVt-Hl construction of catheter foruse in diseases of the bladder.

to use a catheter there are conditions of the bladder under which. thecatheter of usual construction-that is, with the ordinary fineperforations as an inlet therciniodoes. not work readily orsatisfactorily, or su bserve fully the results expected from it.Examples of such unsatisfactory operation are seen where there is a gooddeal of mucus present in the bladder, such mucus being apt to surrouml.or lie upon the end of the catheter, clogging or stopping the fineapertures thereof 5 and preventing the ingress of fluids to be drawnoff, and again where the bladder is in a flabby condition the walls areapt in close around the eatheier and similar-Ly prevent the readyingress and (low of liquids, while if much sediment be present it clogs,even sometimes filling in part or completely, the apertures, with againeonseiiuient failure of the catheter to fully pertkn'nr its functions.Such failure is especially apt to happen in nearly if not quite allforms of chronic discases of the bladder, and notably so in cys titis.

The object therefore of I my invention is to furnish a catheter reliableand efficient in operation when the use of a catheter is indicated andthat in all conditions and diseases of the bladder, in which danger ofclogging or of failure to perform its functions is obviated, whoseinterior maybe readily cleansed, by which bits of mucus, usuallyclogging an ordinary catlu'eter, may be readily drawn oft, one that maybe used on occasions as alithontriptor to a certain extent and withsmall obstructions, otf comparatively simple eonstruct-ion, readily usedand operated, and durable; to which ends it consists in the teaturesmore particularly horeimilter described and claimed.

In the drawings is illustrated a catheter embodying my invention, inwhich drawings Figure 1 is an outer plan View thereof; Fig. 2, alongitudinal section; Fig. 3, an enlarged view of the bulbous headandcleaningloop.

In these figures the reference-nmneral 1 indicates the body of thecatheter, the tube through which after insertion fluids are cen- 'eyedlIt is of the ordinary plain tubular construction, curved at the entranceend in the It is well known that when it is necessary usual way, saidend preferably being unperforated. Instead, however, of being rounded orovaled at the end, as is usual, it is cut off square at the end, leavingan inlet thereat of the same or about the same size as the body of thetube at such end, as seen at 9 in the figures. For the closure ofthisopen on d and the easy insertion of the catheter, as well as for otherpurposes, some of which are hereinafter referred to, a bulbous orrounded head, 3, is used, preferably solid, and attached to one end of awire, 5, passing through the body or tube 1 and projecting at its rearor outlet end. For convenience of manipulation, such end is providedwith a handle, (3, though the .objeet of such handle, attachable ordetaclr able from the wire 5, may be accomplished by forming a simpleloop at the end from. the wire itself. If the wire 5 and the wire 10,hereinafter noted, he of ductile metal, they or either of them may bebent, as at 7, the step orledge serving as a stop to limit the amount ofin ward movement of the wire and consequent lifting of the head 3 fromits seat at the end 2.

This construction, as thus described, forms, it is seen, a veryefficient catheter, having an area of opening so large as to greatlyobviate danger of clogging, for if mucus should lodge against'the end 2the working of the head 3 back and forth upon its seat would cut awaythe obstructing bits of mucus and permit them to pass out through thetube 1, while by the use of the head projected from its seat the wall ofthe bladder, when the latter is in a flabby condition, may be so keptaway from the inlet at end 2 that. the How thereinto is not impeded.

ciency, the bulbous head 3 should be formed with a rim, at, by cuttingaway part of the To add however to its effibase, and so that the rim 4sits snugly upon the end 2, as a valve upon its seat, the lower part ofthe head passing; within the tube 1. Such construction aidsin theerushingot' any small obstructions which may lodge at the top of the end2, and in the cuttingaway of mucus, &'e., which tend to clog the flow.

To provide tor the ready and thorough cleansing of the interior, aseeond wire, 10, is passed up through the tube 1, its outer end beingfurnished with a loop or handle, l2.

At its inner or upper end it is formed intoor open end 3, the wire 5,,mssing therethrongh,

has set-urml to it a eireularloop, l 'l,surronndingthe wire 5, and ot asize to sol-ape the interior wall of the eatlieter-body and to titaround the port on of, the head below the rim t, where it wouldordinarily rest when not in use. The reeiproeation of this loop withinthe tuhe would readily remove, it is easily seen, an 3' adherent matterstherefrom. At the rear end ot. the tuhe or body 2 there v should be oneor more ledges or threads, 9, for the seeurement of a flexible pipeslipped thertmver, so that the eat'het'er may be transformed into asyringe tor the intn'oduetion instead of the removal of fluids.

Hming thus described my inventiomwhat I claim. is-

.1. A catheter having a Full open inlet end, 5 a head adapted to beseated thereon, and act as a valve, and a wire attached to such head andpassing through the hodyot' the (wttheter, substantially as set forth.

2. A eat-heter composed of tube 1 with full inlet end 2, a head, 3. withrim orledge 4, and wire 5, a "acted 1 tie head and passing through thetube 1, substantially as set forth. 3. The ('(nnbinatiou of tube 1 withfull the head 23, attached to such wire and seating upon the end 2, thewire 10, and the loop 11,

' si'lrroumling' the wire 5 and partot the head 23, substantially as setforth.

In testimony whereof I at'fix my signature in presenee of two witnesses.

0 REUBEN N. MAYFIELD.

\\' itn esses D. W. KING,

\Vrnms Swansea.

